| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys, Processing and Characterization
|
| Presentation Title |
Effects of Ultrasonic Melt Processing on Microstructure, Mechanical Properties and Electrical Conductivity of Hypereutectic Al-Si, Al-Fe and Al-Ni Alloys with Zr Additions |
| Author(s) |
Suwaree Chankitmunkong, Dmitry G. Eskin, Chaowalit limmaneevichitr |
| On-Site Speaker (Planned) |
Suwaree Chankitmunkong |
| Abstract Scope |
Ultrasonic melt processing (USP) was applied to hypereutectic alloys of three different systems (Al-Si-Zr, Al-Fe-Zr and Al-Ni-Zr) in search for an alternative to Al-Si alloys for high-temperature applications. Mechanical properties of these alloys were controlled through both structure refinement by USP and also Al3Zr nano-precipitation hardening. Significant refinement of primary intermetallics was achieved under USP during the Al3Zr formation in solidification process. The residual Zr in the aluminium solid solution enabled precipitation hardening at 450 °C. As a result, the tensile properties, especially ductility, were considerably improved at room and elevated temepratures. The mechanical properties were analysed with respect to the volume fraction of intermetallic phases. Electrical conductivity was measured to better explore the potential applications of these hypereutectic alloys. |
| Proceedings Inclusion? |
Planned: Light Metals |